Best Free Antivirus Software

Windows Defender, built into every modern version of Windows, provides solid baseline protection for most home users when combined with good browsing habits and regular updates.

If you want additional features like a firewall manager, ransomware protection, or a password manager bundled in, reputable free tiers from established security vendors are a reasonable option — just be cautious of upsells and unnecessary "PC cleaner" add-ons that are more marketing than substance.

Whatever you choose, the most important habits are keeping Windows and your browser updated, avoiding suspicious email attachments and links, and running periodic scans. A technician can help configure your security software so it’s actually working the way you expect.